Material event report (decision to redeem own convertible bonds early)

What happened

Material Event Report (Decision on Early Acquisition of Self-Convertible Bonds) Version 6.0

Satoshi Holdings Co., Ltd. Material Event Report / Exchange Reporting Obligation Financial Services Commission / Korea Exchange

Date: September 18, 2026

Company Name: Satoshi Holdings Co., Ltd. Representative Director: Yeom Je-woo Headquarters Address: 5 Seonreung-ro 135-gil, Gangnam-gu, Seoul (Nonhyeon-dong) Telephone: 02-3012-0033 Website: http://satoshi.holdings

Prepared by: Representative Director Yeom Je-woo Telephone: 070-4211-0750

Decision on Early Acquisition of Self-Convertible Bonds

1. Type of Bond Series: 13 Type: Bearer, interest-bearing, unsecured private placement convertible bond

2. Bond Issuance Date: June 30, 2026

3. Bond Issuance Method: Private placement

4. Bond Maturity Date: June 30, 2029

5. Total Face Value (Electronic Registration) of Bond: 2,000,000,000 won

6. Face Value (Electronic Registration) of Bond Subject to Acquisition: 1,000,000,000 won

7. Acquisition Decision Date: September 18, 2026

8. Acquisition Amount: 1,004,079,357 won Calculation Basis: Principal and interest payment (scheduled) date: September 18, 2026 Source of Acquisition Funds: Own funds (paid-in capital from paid-in increase)

9. Acquisition Method: Over-the-counter purchase

10. Reason for Early Acquisition: Decision to acquire bonds before maturity by agreement with bondholders

11. Future Handling Plan: Planned deregistration of registered bonds with Korea Securities Depository

12. Conversion Details Conversion Ratio (%): 100 Conversion Price as of Reporting Date (won/share): 4,855 Type of Stock to be Issued upon Conversion: - Number of Shares: - Ratio to Total Shares (%): - Conversion Request Period Start Date: June 30, 2027 Conversion Request Period End Date: May 31, 2029

13. Remaining Face Value (Electronic Registration) of Bond After Acquisition: 1,000,000,000 won

14. Subject to Fair Trade Commission Reporting: Not applicable

15. Other Matters for Reference in Investment Decisions - The above bond acquisition amount includes principal and interest. - The above acquisition decision date is the board resolution date, and the payment (scheduled) date is the scheduled date for stock and bond deposits/withdrawals. - The above bond face value (electronic registration) and remaining bond face value (electronic registration) after acquisition exclude 2,000,000,000 won of self-held convertible bonds owned by the issuer.

Information Regarding Seller

Seller Name: Summit Prime Value Investment Partnership Relationship with Company or Largest Shareholder: Bondholder of this bond Selection Process: - Transactions and Plans Within 6 Months Before and After Acquisition Decision: - Face Value of Bond Sold (won): 1,000,000,000 Remarks: -

Where a Corporation or Organization is Included Among Sellers

(1) Basic Information on Corporation or Organization Name: Summit Prime Value Investment Partnership Number of Investors: 3 Representative Director (Representative Partner): Jeon Sang-eon Business Executive (Business Execution Partner): - Largest Shareholder (Largest Investor) Name: Bitmax Co., Ltd. / Shareholding (%): 100

(2) Key Financial Information at Most Recent Fiscal Year-End of Corporation or Organization (Unit: Million won) Fiscal Year: - Fiscal Year-End: - Total Assets: - Revenue: - Total Liabilities: - Net Income for the Period: - Total Capital: - External Auditor: - Capital: - Audit Opinion: -

Bitmax Co., Ltd.

(1) Basic Information on Corporation or Organization Name: Bitmax Co., Ltd. Number of Investors: - Representative Director (Representative Partner): Hong Sang-hyuk Business Executive (Business Execution Partner): - Largest Shareholder (Largest Investor) Name: Metaplatform Investment Partnership / Shareholding (%): 11.83

(2) Key Financial Information at Most Recent Fiscal Year-End of Corporation or Organization (Unit: Million won) Fiscal Year: 2025 Fiscal Year-End: 12 Total Assets: 107,159 Revenue: 27,215 Total Liabilities: 96,548 Net Income for the Period: -96,351 Total Capital: 10,612 External Auditor: Samduk Accounting Firm Capital: 20,969 Audit Opinion: Appropriate